21498268

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{701}}^1$

素因数の和:774

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 23081540

約数列:

[1, 2, 4, 11, 17, 22, 34, 41, 44, 68, 82, 164, 187, 374, 451, 697, 701, 748, 902, 1394, 1402, 1804, 2788, 2804, 7667, 7711, 11917, 15334, 15422, 23834, 28741, 30668, 30844, 47668, 57482, 114964, 131087, 262174, 316151, 488597, 524348, 632302, 977194, 1264604, 1954388, 5374567, 10749134, 21498268]

約数ペア:

[(1, 21498268), (2, 10749134), (4, 5374567), (11, 1954388), (17, 1264604), (22, 977194), (34, 632302), (41, 524348), (44, 488597), (68, 316151), (82, 262174), (164, 131087), (187, 114964), (374, 57482), (451, 47668), (697, 30844), (701, 30668), (748, 28741), (902, 23834), (1394, 15422), (1402, 15334), (1804, 11917), (2788, 7711), (2804, 7667)]